The Headquarters (HQ) United States Space Command (USSPACECOM) Weather and Space Environment Branch (J33W) serves as the Senior Meteorology and Oceanography (METOC) Office for NORAD. USSPACECOM/J33W provides policy and guidance for meteorological, oceanographic, and space environment operations in support of NORAD, and ensures standardization of METOC support throughout the command. Most NORAD organizations have no weather personnel directly assigned. Therefore, it is the responsibility of NORAD units or units under the OPCON of CINCNORAD to arrange for environmental support from a host organization. Environmental support may come from US military units (to include ANG and AFRC), Canadian Forces units, National Weather Service or Federal Aviation Administration offices, the Canadian Forces Weather Service (CFWS) or from the Atmospheric Environment Service (AES). This support should use in-place assets and centralized products to the maximum extent possible. Because of the bi-national nature of NORAD and the mix of centralized products available, guidance can only be general in nature; however, environmental support must meet the minimum requirements set forth in this instruction and must, where applicable, be documented in a host tenant support agreement or other memorandum of agreement or understanding. Direct coordination between weather organizations supporting the same NORAD operation is encouraged.